All names: WISE J223041.05-751413.8, NAME WD 2226-754A, 2MASS J22304008-7513567, TIC 325341811, SSPM J2231-7514, UCAC4 074-043328, Gaia DR2 6357630601240673792, WDS J22307-7514A, WD 2226-754, ** SLN 93A, WDJ223039.98-751355.24, SSSPM J2231-7514A, SPMJ2231-7514, CNS5 5561, SSSPM J2231-7514, Gaia DR3 6357630601240673792, WISEA J223041.12-751414.6, Gaia EDR3 6357630601240673792, SCR J2230-7513
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Subasavage et al. 2017 | Stilism | Holberg et al. 2016 | Sion et al. 2014 | Giammichele et al. 2012 | Subasavage et al. 2009 | Holberg et al. 2008 | Subasavage et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 30 41.70 (0.03) | 22 30 41.65 (0.03) | 22 30 33.55 | 22 30 39.60 | 22 30 40.00 | 22 30 40.00 | 22 30 41.70 | 22 30 39.98 (0.03) | 22 30 41.65 | 22 30 39.19 | ||||||
| Declination | -75 14 24.45 (0.03) | -75 14 23.54 (0.04) | -75 15 02.02 | -75 13 55.20 | -75 13 55.30 | -75 13 55.30 | -75 14 24.45 | -75 13 55.23 (0.03) | -75 14 23.54 | -75 13 48.36 | ||||||
| Spectral type | DC | DC | DC | DC11.9 | DC | DC | DC | DC | DC9 | DX12 | ||||||
| Effective temperature | [K] | 4194.0 (25) | 4410.0 (60) | 4284.0 (138) | 4230.0 | 4284.0 (138) | 4108.0 (93) | 4230.0 (104) | 4247.0 (16) | |||||||
| log(g) | [cgs] | 7.73 (0.02) | 7.87 (0.05) | 8.00 (0) | (0) | 7.65 (0.02) | 7.74 (0.008) | |||||||||
| Mass | [M☉] | 0.438 (0.008) | 0.5 (0.04) | 0.58 (0) | 0.58 (0) | 0.39 (0.01) | 0.429 (0.006) | |||||||||
| log(Luminosity) | [L☉] | -4.20 (0.04) | -4.32 | -4.22 (0.02) | ||||||||||||
| Cooling age | [Gyr] | 6.5000 (0.6) | 8.2400 | 8.2500 | 5.2700 (0.2) | |||||||||||
| log(H/He) | ||||||||||||||||
| log(C/He) | ||||||||||||||||
| log(Ca/He) | ||||||||||||||||
| log(Ca/H) | ||||||||||||||||
| log(C/H) | ||||||||||||||||
| log(N/H) | ||||||||||||||||
| log(O/H) | ||||||||||||||||
| log(Na/H) | ||||||||||||||||
| log(Mg/H) | ||||||||||||||||
| log(Al/H) | ||||||||||||||||
| log(Si/H) | ||||||||||||||||
| log(P/H) | ||||||||||||||||
| log(S/H) | ||||||||||||||||
| log(Sc/H) | ||||||||||||||||
| log(Ti/H) | ||||||||||||||||
| log(Cr/H) | ||||||||||||||||
| log(Mn/H) | ||||||||||||||||
| log(Fe/H) | ||||||||||||||||
| log(Ni/H) | ||||||||||||||||
| Parallax | [mas] | 66.47 (0.03) | 66.47 (0.03) | 66.45 (0.04) | 65.27 (1) | 66.47 | 66.47 (0.03) | 66.45 (0.04) | ||||||||
| Distance | [pc] | 15.04 (0.008) | 15.04 (0.007) | 15.05 (0.01) | 15.32 (0.2) | 13.43 (0.4) | 12.80 | 13.50 (0.9) | 12.80 | 12.80 | 15.04 | 15.04 (0.008) | 15.05 (0.01) | |||
| Composition | H | H | H | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 410.9685366 (0.04) | 410.9833369 (0.08) | 410.969 (0.04) | 410.9833369 | |||||||||||
| Proper motion (declination) | [mas/yr] | -1825.835463 (0.04) | -1825.777179 (0.08) | -1825.835 (0.04) | -1825.777179 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | DDr | |||||||||||||||
| B magnitude | 17.73 | |||||||||||||||
| V magnitude | 16.56 | 16.59 | 16.57 | |||||||||||||
| R magnitude | 15.92 | 15.93 | 15.92 (0.2) | |||||||||||||
| I magnitude | 15.32 | 15.33 | 15.33 | |||||||||||||
| J magnitude | 14.66 (0.04) | 14.66 | 14.66 (0.04) | 14.66 (0.04) | 14.66 (0.04) | |||||||||||
| H magnitude | 14.66 (0.06) | 14.66 | 14.66 (0.06) | 14.66 (0.06) | 14.66 (0.06) | |||||||||||
| K magnitude | 14.44 (0.08) | 14.44 | 14.44 (0.08) | 14.44 (0.08) | 14.44 (0.08) | |||||||||||
| u magnitude | ||||||||||||||||
| g magnitude | ||||||||||||||||
| r magnitude | ||||||||||||||||
| i magnitude | ||||||||||||||||
| z magnitude | ||||||||||||||||
| G magnitude | 16.19 (0.003) | 16.20 | 16.19 | 16.19 (0.003) | 16.20 | |||||||||||
| BP magnitude | 16.84 (0.003) | 16.87 | 16.87 | |||||||||||||
| RP magnitude | 15.41 (0.002) | 15.43 | 15.43 | |||||||||||||
| Pan g magnitude | ||||||||||||||||
| Pan r magnitude | ||||||||||||||||
| Pan i magnitude | ||||||||||||||||
| Pan z magnitude | ||||||||||||||||
| Pan y magnitude | ||||||||||||||||
| E(B-V) | 0.000 | |||||||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.